A simple breakout board for two of the less popular ATTiny microcontroller series, in the spirit of my other breakout boards. Both are supported by my ATTiny core ATTiny core on github. This board is a bit larger physically than my other breakout boards, as two sets of pads for crystal were needed, as well as two ISP headers, since they are unfortunately not entirely pin compatible. However, as relatively uncommon parts, I felt that this was an acceptable compromise.

Why the x7 and x61?

The ATTiny x7 series, which comes in 16k and 8k versions, are the only ATTiny with a LIN port (this LIN can also be used as a UART), as well as an asynchronous timer.

The ATTiny x61 series, which comes in 2k, 4k, and 8k sizes, are designed specifically for driving BLDC motors. These feature an internal PLL and a timer that can be clocked off of the high speed PLL clock and output up to independent 3 PWM channels - or 3 PWM channels and 3 negated PWM channels, with a programmable deadtime generator (for driving BLDC motors). The PLL clock also allows it to run at 16mhz w/out external crystal.

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